diff --git a/doc/reference/function-list.xml b/doc/reference/function-list.xml
index 378a53f1..91d74c08 100644
--- a/doc/reference/function-list.xml
+++ b/doc/reference/function-list.xml
@@ -1045,8 +1045,7 @@
 <row>
   <entry>draw_line</entry>
   <entry>draw a line on an image</entry>
-  <entry>vips_draw_line(), vips_draw_line1(),
-    vips_draw_line_mask(), vips_draw_line_mask1()</entry>
+  <entry>vips_draw_line(), vips_draw_line1()</entry>
 </row>
 <row>
   <entry>draw_circle</entry>
diff --git a/libvips/include/vips/draw.h b/libvips/include/vips/draw.h
index 673403d3..bfd93a20 100644
--- a/libvips/include/vips/draw.h
+++ b/libvips/include/vips/draw.h
@@ -71,13 +71,6 @@ int vips_draw_line( VipsImage *image,
 int vips_draw_line1( VipsImage *image, 
 	double ink, int x1, int y1, int x2, int y2, ... )
 	__attribute__((sentinel));
-int vips_draw_line_mask( VipsImage *image, 
-	double *ink, int n, int x1, int y1, int x2, int y2, 
-	VipsImage *mask, ... )
-	__attribute__((sentinel));
-int vips_draw_line_mask1( VipsImage *image, 
-	double ink, int x1, int y1, int x2, int y2, VipsImage *mask, ... )
-	__attribute__((sentinel));
 
 int vips_draw_circle( VipsImage *image, 
 	double *ink, int n, int cx, int cy, int radius, ... )